发明授权
US08574108B2 Sprockets made of two materials with half holes on the edge of central portion
有权
由两个材料制成的链轮，在中心部分的边缘有半孔
- 专利标题： Sprockets made of two materials with half holes on the edge of central portion
- 专利标题（中）： 由两个材料制成的链轮，在中心部分的边缘有半孔
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申请号： US12819917申请日： 2010-06-21
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公开(公告)号： US08574108B2公开(公告)日： 2013-11-05
- 发明人: Yimin Wang
- 申请人： Yimin Wang
- 申请人地址： CN Ningbo
- 专利权人： Vpower Racing USA, Inc.
- 当前专利权人： Vpower Racing USA, Inc.
- 当前专利权人地址： CN Ningbo
- 代理机构： Orrick, Herrington & Sutcliffe LLP
- 主分类号： F16H55/30
- IPC分类号： F16H55/30
摘要：
The present sprocket wheel invention enhances the efficiency of the sprockets made of two materials, e.g., a lighter material at central portion of the sprocket and a hard material at peripheral portion of the sprocket comprising teeth, by drilling half holes on the outer edge of the central portion and half holes on the inner edge of the peripheral portion of the sprocket. In the preferred embodiment, half of the thickness of the sprocket is the entire hole on the peripheral portion of the sprocket with harder materials, and the other half of the thickness of the sprocket is designed to have said half holes for rivets to attach the central portion and the peripheral portion of the sprocket.